Jaspee vannett



(ModeL) J. VANNETT.

OSOILLATING HOOK FOR SEWING MACHINES.

Patented Feb. 16, 1886.

awe/whoa UNITED STATES PATENT OFFICE.

JASPER VANNETT, OF TIFFIN, OHIO, ASSIGNOR OF ONE-THIRD TO GEORGE S.YINGLING, OF SAME PLACE.

OSCILLATING HOOK FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 336,456 dated February16, 1886.

Application filed February 14, 1884. Serial No. 120,783. (ModeL) To allwhom it may concern.-

Be it known that I, JASPER VANNETT, a citizen of the United States,residing at Tiffin, in the county of Seneca and State of Ohio, haveinvented a new and useful Improvement in Oscillating Hooks forSewing-Machines, of which the following is a specification.

My invention relates to improvements in that class of sewing-machinesknown as oscillating-hook machines; and it consists in the combinationand arrangement of parts, as hereinafter specified, and pointed out inthe claims.

In the drawings, Figure 1 represents an end View of the device when inposition in a machine; Fig. 2, a longitudinal section of the same, andFig. 3 a vertical sectional view on line x 00, Fig. 2.

The shaft A, Fig. 2, rests under the bedplate B of a machine, and hasimparted 'to' it by suitable mechanism a rotary oscillating movement.This shaftis provided with ahead, 0, having eccentrically in it ahole orpassage, D. Held normally in the hole D by means of a set-screw, E, is apin, F, projecting from a disk, G, having its face slightly rounded.Having a single point of attachment, H, to one edge of the said disk Gis a cylindrical frame, I, broken in its continuity by the mouth K,which has overlapping lips. Erected on the frame I, on that side of themonth occupied by the under lip, is a hook, L. The inner edge of thesaid frame is parallel to but at a slight distance from the face of thedisk G, except at the connecting-point I'I. Within the frame I rests thecylinder M, having one end closed, and from which closed endprojectsinwardly a spindle, N, for the bobbin-spool O. This spindle isnot essential. This cylindrical case and the contained bobbin is heldinplace in the interior of the frame I by a door, P, having projectingfrom one side a hinge-rod, B, one side of which is flattened and forms abearing for the retaining-spring S. This door may be turned to one side,as in Fig. 1. The closed end of the case M is concaved somewhat on theexterior, and thereby forms a seat for the tension-plate T, whichconsists of a disk, and which is held in place by a screw, U, under thehead of which is interposed the spring-washer V. In the edges of theclosed end of the said case M are the diametricallyopposite holes XV,and on the surface of th case is a depression, X, connecting a hole, Y,about centrally located, to one of the said holes IV. The thread fromthe bobbin passes through these holes and under the tension plate T. Thebobbin-case and hook being placed eccentrically on the shaft with thepoint of the hook so placed as to move, when in operation, as near thecenter of the said shaft as possible, the saidhook has the shortestpossible travel. and permits a shorter needle and smaller loop formedthereby to be utilized than though the center of the hook, which pointcoincides with the center of the bobbin, were at the axis of the shaftA. The surface of the frame I back of the hook is rounded to cause theloop to fall to the sides of said frame more easily than if the samewere of other shape. needle and directs its course into the mouth K asthe said device is oscillated, and when the shaft begins the reversemovement the needle-thread is drawn out of the mouth K, by means of anordinary takeup, and entirely around the bobbin-thread, forming thestitch. The bobbin-case being eccentric on the shaft A, the said bobbinwill be nearly all above the center of the shaft A during a port-ion ofthe revolution; hence the loop will be much shorter than though the saidbobbin were centrally placed on said shaft. As the loop passes entirelyaround the bobbin, the bobbin-thread must be encircled by the said loopand the stitch formed.

By means of the pin F and the set-screw holding the same the position ofthe book may be varied, the said pin being the axis thereof, and thuscaused to engage the loop sooner or later in the revolution of theshaft.

'1 claim- 1. Combined with theactuating-shaft, aloophook andbobbin-holder mounted eccentrically thereon, and having a rotaryadjustment 011 the point of connection, substantially as specified.

2. Combined with the actuatingshaft, aloophook having its axis eccentricto the axis of the said shaft, and having a rotary adjustment on saideccentric axis, substantially as specified.

3. A cylindrical frame connected integrally at one edge and at a singlepoint to an edge of The hook engages the loop from the spring-retainedpivot or hinge on one side said IO case, the whole arrangedsubstantially as and for the purpose specified.

In testimony that I claim the foregoing I have hereunto set my hand.

JASPER VANNETT.

a disk, and having an exterior proj ecting hook and a mouth leading toits interior, combined with a bobbin loosely contained in said case,substantially as specified.

4. Combined with the actuating-shaft, a disk fixed to said shafteccentric to its axis, a cylindrical frame attached to one edge thereofX'Vitnesses: and having an exterior loop-hook, andamouth J. G.RIOKENBAUGH, leading to the interior, and a door with a J. O. ROYER.

